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import subprocess
import sys
from pathlib import Path
import pytest
from _pytest.monkeypatch import MonkeyPatch
# Test for _argcomplete but not specific for any application.
def equal_with_bash(prefix, ffc, fc, out=None):
res = ffc(prefix)
res_bash = set(fc(prefix))
retval = set(res) == res_bash
if out:
out.write(f"equal_with_bash({prefix}) {retval} {res}\n")
if not retval:
out.write(" python - bash: %s\n" % (set(res) - res_bash))
out.write(" bash - python: %s\n" % (res_bash - set(res)))
return retval
# Copied from argcomplete.completers as import from there.
# Also pulls in argcomplete.__init__ which opens filedescriptor 9.
# This gives an OSError at the end of testrun.
def _wrapcall(*args, **kargs):
try:
return subprocess.check_output(*args, **kargs).decode().splitlines()
except subprocess.CalledProcessError:
return []
class FilesCompleter:
"""File completer class, optionally takes a list of allowed extensions."""
def __init__(self, allowednames=(), directories=True):
# Fix if someone passes in a string instead of a list
if type(allowednames) is str:
allowednames = [allowednames]
self.allowednames = [x.lstrip("*").lstrip(".") for x in allowednames]
self.directories = directories
def __call__(self, prefix, **kwargs):
completion = []
if self.allowednames:
if self.directories:
files = _wrapcall(["bash", "-c", f"compgen -A directory -- '{prefix}'"])
completion += [f + "/" for f in files]
for x in self.allowednames:
completion += _wrapcall(
["bash", "-c", f"compgen -A file -X '!*.{x}' -- '{prefix}'"]
)
else:
completion += _wrapcall(["bash", "-c", f"compgen -A file -- '{prefix}'"])
anticomp = _wrapcall(["bash", "-c", f"compgen -A directory -- '{prefix}'"])
completion = list(set(completion) - set(anticomp))
if self.directories:
completion += [f + "/" for f in anticomp]
return completion
class TestArgComplete:
@pytest.mark.skipif("sys.platform in ('win32', 'darwin')")
def test_compare_with_compgen(
self, tmp_path: Path, monkeypatch: MonkeyPatch
) -> None:
from _pytest._argcomplete import FastFilesCompleter
ffc = FastFilesCompleter()
fc = FilesCompleter()
monkeypatch.chdir(tmp_path)
assert equal_with_bash("", ffc, fc, out=sys.stdout)
tmp_path.cwd().joinpath("data").touch()
for x in ["d", "data", "doesnotexist", ""]:
assert equal_with_bash(x, ffc, fc, out=sys.stdout)
@pytest.mark.skipif("sys.platform in ('win32', 'darwin')")
def test_remove_dir_prefix(self):
"""This is not compatible with compgen but it is with bash itself: ls /usr/<TAB>."""
from _pytest._argcomplete import FastFilesCompleter
ffc = FastFilesCompleter()
fc = FilesCompleter()
for x in "/usr/".split():
assert not equal_with_bash(x, ffc, fc, out=sys.stdout)
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